All models
Up to 10 hours of surfing the web on Wi‐Fi, watching video, or listening to music
Charging via power adapter or USB to computer system
Wi‐Fi + Cellular models
Up to 9 hours of surfing the web using cellular data network
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Operating System：
iOS 9
With an all-new design and all-new features, iOS 9 is the world’s most advanced mobile OS. In its most advanced form.
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Languages：